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Manufacturer of Brazing Alloys & Fluxes in IRAN

BRASS BRAZING ALLOYS

Brass brazing alloys also called Copper-Zinc
brazing alloys, could be divided into normal
brass alloy and special brass alloy. Dif ferent
from normal brass alloy, special brass alloy is a
multi-component copper alloy composed with
Sn, Mn, Ni, Fe, Si and other elements. Special
brass alloys have better brazing properties than
normal copper-zinc alloys. It could provide better
brazing strength, higher corrosion resistance,
more convenient brazing process, etc.
For example, the addition of Sn can reduce the
melting point of common copper-zinc alloy, make
brazing temperature lower and easier to operate;
the addition of Mn can improve the strength of
copper-zinc alloy, more suitable for the use of
cemented carbide products.
Alloy often used with liquid flux dosed directly on
the torch flame through the appropriate vaporizer.
Used as filler or for reconstructing gear teeth,
bearings, shafts, valve seats, steering joints,
handlebars and bicycles.

BRASS BRAZING ALLOYS
Standards Composition By Weight % Melting Working
Area of Main
range temperature
DIN 8513 EN 1044 ISO 17672 Application parent Metals
ISO 6377 (1995) (1999) (2010) Zn Cu Sn Si Mn Ni ˚C ˚C
L-CuZn40 Cu 470&
CU 301 Rem 60 0.2 0.3 - - 875-895
B Cu60Zn(Si) Cu470a
Brass
L-CuZn40 Cu 470& type Copper
CU 302 Rem 60 0.4 0.3 - -
B Cu60Zn(Sn)(Si) Cu470a 875-895 special and
L-CuZn40 ductile Copper
CU 303 Cu471 Rem 60 0.2 0.25 0.15 - 875-900
B Cu60Zn(Si)(Mn) min 900˚C tecommonded alloy alloys,
L-CuZn39Sn for Steel
CU 304 - Rem 60 0.3 0.25 0.15 - 875-900
B Cu60Zn(Sn)(Si)(Mn) ferrous and
L-CuNi10Zn42 and Steel
CU 305 - Rem 48 0.2 0.25 0.2 10 890-920
B Cu48ZnNi(Si) cuprous alloys
metals
L-CuZn39Sn
CU 306 - Rem 59 1.0 0.3 0.6 1 870-890
B Cu59ZnSn(Ni)(Mn)(Si)

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2015